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Sun Fire X4600 and Sun Fire X4600 M2 Servers Service Manual |
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1. Introduction to the Sun Fire X4600/X4600 M2 Servers
2. Powering On and Configuring BIOS Settings
3. Maintaining the Sun Fire X4600/X4600 M2 Servers
E. Serial Attached SCSI BIOS Configuration Utility
E.1 Fusion-MPT SAS BIOS Overview
E.1.1 Boot Initialization With BIOS Boot Specification (BBS)
E.2 Starting the SAS BIOS Configuration Utility
E.3 Configuration Utility Screens
E.3.3 Global Properties Screen
E.3.4 Adapter Properties Screen
E.3.6 Device Properties Screen
E.3.8 Advanced Adapter Properties Screen
E.3.9 Advanced Device Properties Screen
E.3.11 Integrated RAID Configuration and Management Screens
E.3.11.1 Select New Array Type Screen
E.3.11.2 Create New Array Screen
E.4 Performing RAID Configuration Tasks
E.4.1 RAID Implementation and Support
Viewing RAID Volume Properties
This appendix explains how to use the LSI Logic Fusion-MPT Serial Attached SCSI (SAS) BIOS Configuration Utility. This appendix contains the following sections:
E.4 Performing RAID Configuration Tasks
Note - The information in this appendix applies to the original Sun Fire X4600 server, and to the Sun Fire X4600 M2 server, unless otherwise noted in the text.
The Fusion-MPT SAS BIOS features include:
Configuration for up to 256 adapters; any four can be chosen for INT13 (bootrom) support
Support for Message Passing Technology (MPT)
Support for the LSI53C1064 devices
Support for SAS and SATA devices
Support for Integrated RAID initialization (with proper firmware)
The SAS BIOS is the bootable ROM code that manages SAS hardware resources. It is specific to a family of LSI Logic Fusion-MPT SAS controllers or processors. The Fusion-MPT SAS BIOS integrates with a standard system BIOS, extending the standard disk service routine provided through INT13h.
During the boot time initialization, the SAS BIOS determines whether the system BIOS has already installed other hard disks, such as an IDE drive. If such drives are already installed, the SAS BIOS maps any SAS drives it finds behind these drives. Otherwise, the SAS BIOS installs drives starting with the system boot drive. In this case, the system boots from a drive controlled by the SAS BIOS. The LSI Logic SAS BIOS supports the BIOS Boot Specification (BBS).
The Fusion-MPT SAS BIOS supports the BIOS Boot Specification (BBS), which allows you to choose which device to boot from by selecting the priority.
To use this feature, the system BIOS must also be compatible with the BBS. If the system supports the BBS, you can use the system BIOS Setup menu to select the boot order and drive order. In the system BIOS Setup, the Boot Connection Devices menu lists the available boot options. Use that menu to select the device and rearrange the order. Then exit to continue the boot process.
If you have SAS BIOS version 6.xx, and it includes the Fusion-MPT SAS BIOS Configuration Utility, you can change the default configuration of the SAS host adapters. You may decide to change these default values if there is a conflict between device settings or if you need to optimize system performance.
The version number of the SAS BIOS appears in a banner displayed on the computer monitor during bootup. If the utility is available, the following message also appears during bootup:
Press Ctrl+C to start LSI Logic Configuration Utility...This message remains on the screen for about five seconds, giving you time to start the utility. If you press the indicated key sequence, the message changes to:
Please wait, invoking LSI Logic Configuration Utility...After a brief pause, the computer monitor displays the Main menu of the Fusion-MPT SAS BIOS Configuration Utility. The following messages may appear during the boot process:
Adapter removed from boot order!
This message appears when an adapter was removed from the system or was relocated behind a PCI bridge.
Adapter configuration may have changed, reconfiguration is suggested!
This message appears if none of the information in the NVRAM is valid.
Updating Adapter List!
This message appears when fewer than four adapters are in the boot order and more adapters exist than are shown.
 | Caution - The SAS BIOS Configuration Utility is a powerful tool. If, while using it, you somehow disable all of the controllers, press Ctrl-E (or Ctrl-A on versions earlier than 5.00) after memory initialization during reboot to re-enable and reconfigure the controllers. |
Note - Some devices detected by the Configuration Utility cannot be controlled by the SAS BIOS. Devices such as tape drives and scanners require that a device driver specific to that device be loaded. However, the SAS BIOS Configuration Utility does allow you to modify parameters for these devices.
All SAS BIOS Configuration Utility screens are partitioned into the following areas, starting at the top of the screen:
Header Area – This area lists static information text, including the product title and version.
Menu Area – This area lists the current screen title and controller information when on screens other than Adapter List.
Main Area – This is the main area for presenting data. This area has a cursor for item selection, horizontal scrolling, and vertical scrolling. The horizontal and vertical scroll bars appear here if needed.
Footer Area – This area provides general help information text.
Note - The screens shown in this appendix are examples. The version numbers and the screen items and selections shown are subject to change over the life of the product.
The general key inputs that are listed in User Input Keys apply on all
screens of the SAS BIOS Configuration Utility.
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When you start the Fusion-MPT SAS BIOS Configuration Utility, the Adapter List appears,
as shown in Adapter List Screen . This screen displays a scrolling list of up to
256 LSI Logic SAS host adapters in the system and information about each
of them. Adapter List Screen Field Descriptions describes the fields in this screen.
Use the arrow keys to select an adapter, then press Enter to view
and modify the selected adapter’s properties (and to access the other screens). After
you select an adapter and press Enter, the adapter’s devices are scanned and
the Adapter Properties screen appears. See Adapter Properties Screen .
To change the Adapter boot order, use the -, +, Insert, and Delete keys while on the Boot Order field. Press Insert or Delete to add or remove an adapter to or from the boot order. Press the - and + keys to modify an adapter’s position in the boot order. If you make changes to the boot order, the Configuration Utility prompts you to save the changes before you exit the screen.
From the Adapter List screen, you can also press Alt+N to access the
Global Properties screen. See Global Properties Screen. On this screen you can change global scope
settings.
****************************************************************************** * LSI Logic MPT Setup Utility v6.02.00.00 (2005.07.08) * * Adapter List Global Properties * * Adapter PCI PCI PCI PCI FW Revision Status Boot * * Bus Dev Fnc Slot Order * * SAS1064 02 03 00 00 1.04.00.00-IR Enabled 0 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Esc = Exit Menu F1/Shift+1 = Help * * Alt+N = Global Properties -/+ = Alter Boot Order Ins/Del = Alter Boot List * ******************************************************************************
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To access the Global Properties screen, press Alt+N while on the Adapter List
screen. To return to the Adapter List from Global Properties, press Alt+N again.
Global Properties Screen shows an example of the Global Properties screen. Global Properties Screen Field Descriptions describes the fields in
this screen.
****************************************************************************** * Adapter List Global Properties * * * * * * * * * * * * Pause When Boot Alert Displayed [No] * * Boot Information Display Mode [Display adapters & installed devices] * * Support Interrupt [Hook interrupt, the Default] * * * * Restore Defaults * * * * * * * * * * * * * * * * * * * * Esc = Exit Menu F1/Shift+1 = Help * * Alt+N = Adapter List * ******************************************************************************
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The Adapter Properties screen allows you to view and modify adapter settings. It
also provides access to all other screens. Adapter Properties Screen shows an example of
the Adapter Properties screen. Adapter Properties Screen Field Descriptions describes the fields of the screen.
****************************************************************************** * LSI Logic MPT Setup Utility v6.02.00.00 (2005.07.08) * * Adapter Properties -- SAS1064 * * * * Adapter SAS1064 * * PCI Slot 00 * * PCI Address(Bus/Dev/Func) 02:03:00 * * MPT Firmware Revision 1.04.00.00-IR * * SAS Address 50003BA0:000003BA * * Status Enabled * * Boot Order 0 * * Boot Support [Enabled BIOS & OS] * * * * RAID Properties * * * * SAS Topology * * * * Advanced Adapter Properties * * * * * * * * * * Esc = Exit Menu F1/Shift+1 = Help * * Enter = Select Item -/+ = Change Item * ******************************************************************************
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The SAS Topology screen presents a view of the adapter’s SAS hierarchy, as
shown in SAS Topology Screen. You can scroll right to view additional information about the
devices (see SAS Topology Screen Continued 1 through SAS Topology Screen Continued 4.) Descriptions of the fields are given in SAS Topology Screens Field Descriptions .
The SAS Topology screen shows the following objects and their significant properties:
Adapter
PHYs
Attached Devices
Expanders/Enclosures
****************************************************************************** * LSI Logic MPT Setup Utility v6.02.00.00 (2005.07.08) * * SAS Topology -- SAS1064 * * Device Identifier Discovery Device * * SAS1064(02:03:00) Status Info * * * PHY 0 Good * * * PHY 1 Good * * * PHY 2 SEAGATE ST936701LSUN36G 0456 Good SAS * * * PHY 3 SEAGATE ST973401LSUN72G 0356 Good SAS * * * * * * * * * * * * * * * * * * * * * * * * * * * * Esc=Exit F1=Help Alt+M=More Keys * * Alt+D=Device Properties Alt+E=Expander Properties * ******************************************************************************
To expand the SAS Topology display, select an expander or enclosure and press Enter to display all its PHYs/devices/bays. To collapse the display, press Enter again.
While the cursor is on the Device Identifier you can perform the following actions:
Press Alt+E to access a specific Expander Properties screen or press Alt+D to access a specific Device Properties screen.
Press Enter while on an expander or enclosure to expand or collapse the display.
Press Enter while on a device to activate the Locate LED.
At any time while on the screen press C to clear Device
Mappings for non-present devices. Scroll the cursor to the right to display further information
(see SAS Topology Screen Continued 1 through SAS Topology Screen Continued 4).
****************************************************************************** * SAS Topology -- SAS1064 * * Device Identifier Negotiated Link * * SAS1064(02:03:00) Speed(Gbps) * * * PHY 0 Unknown * * * PHY 1 Unknown * * * PHY 2 SEAGATE ST936701LSUN36G 0456 3.0 * * * PHY 3 SEAGATE ST973401LSUN72G 0356 3.0 * * * * * * * * * * * * * * * * * * * * * * * * * * * * Esc=Exit F1=Help Alt+M=More Keys * * Alt+D=Device Properties Alt+E=Expander Properties * ******************************************************************************
****************************************************************************** * SAS Topology -- SAS1064 * * Device Identifier Maximum Link * * SAS1064(02:03:00) Speed(Gbps) * * * PHY 0 3.0 * * * PHY 1 3.0 * * * PHY 2 SEAGATE ST936701LSUN36G 0456 3.0 * * * PHY 3 SEAGATE ST973401LSUN72G 0356 3.0 * * * * * * * * * * * * * * * * * * * * * * * * * * Esc=Exit F1=Help Alt+M=More Keys * * Alt+D=Device Properties Alt+E=Expander Properties * ******************************************************************************
******************************************************************************** * SAS Topology -- SAS1064 * * Device Identifier Target * * SAS1064(02:03:00) Capabilities * * * PHY 0 * * * PHY 1 * * * PHY 2 SEAGATE ST936701LSUN36G 0456 SSP * * * PHY 3 SEAGATE ST973401LSUN72G 0356 SSP * * * * * * * * * * * * Esc=Exit F1=Help Alt+M=More Keys * * Alt+D=Device Properties Alt+E=Expander Properties * ******************************************************************************
****************************************************************************** * SAS Topology -- SAS1064 * * Device Identifier Initiator * * SAS1064(02:03:00) Capabilities * * * PHY 0 * * * PHY 1 * * * PHY 2 SEAGATE ST936701LSUN36G 0456 * * * PHY 3 SEAGATE ST973401LSUN72G 0356 * * * * * * * * * * * * * * * * * * * * * * * * * * * * Esc=Exit F1=Help Alt+M=More Keys * * Alt+D=Device Properties Alt+E=Expander Properties * ******************************************************************************
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The Device Properties screen displays information about a specific device, as shown in
Device Properties Screen . To access this screen, press Alt+D on the SAS Topology screen when
the cursor is on the Device Identifier field of a device.
Press Alt+N or Alt+P at any time while on this screen to cycle to the next or previous device.
****************************************************************************** * LSI Logic MPT Setup Utility v6.02.00.00 (2005.07.08) * * Device Properties -- SAS1064 * * * * * * Device Identifier SEAGATE ST936701LSUN36G 0456 * * Scan Order 2 * * Device Information SAS * * SAS Address 5000C500:001047C9 * * Serial Number 39000SZC 3LC * * * * Verify * * * * * * * * * * * * * * * * * * * * * * Esc=Exit F1=Help Alt+M=More Keys * * Alt+N = Next Device Alt+P = Previous Device Enter = Select Item * ******************************************************************************
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To access the Device Verify screen, press Enter on the appropriate field on the Device Properties screen. This screen includes an Elapsed Time and status bar, which begins incrementing when the operation is started and which shows the current progress of the operation.
When the Device Verify screen appears (see Device Verify Screen ), press Enter to begin the
verify process. You may press Esc at any time to cancel the verify
process. Device Verify Screen Field Descriptions describes the fields of the screen.
****************************************************************************** * Device Verify -- SAS1064 * * * * Device Identifier SEAGATE ST936701LSUN36G 0456 * * SAS Address 5000C500:001047C9 * * Serial Number 39000SZC 3LC * * * * All sectors on the device will be verified. * * Press Enter to continue or any other key to cancel. * * * * * * * * * * Elapsed Time: 00:00:00 * * * * Percent * * Complete 0% 100% * * ************************************************** * * * * * * ************************************************** * * * * Esc=Exit F1=Help Alt+M=More Keys * ******************************************************************************
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If the Logical Block Addresses (LBAs) can be reassigned or need to be reassigned, the following prompt appears:
Reassign the block?(Yes, No, All, nonE, Cancel)The reassignment options are as follows:
Yes: Reassign only this block. If another block needs to be reassigned in the future, display the prompt again.
No: Do not reassign this block. If another block needs to be reassigned in the future, display the prompt again.
All: Reassign the current block, and automatically reassign other blocks that need it, without displaying the prompt again.
nonE: Do not reassign the current block, and do not automatically reassign any other blocks that need it. Do not display the prompt again.
Cancel: Do not reassign anything, and stop the verification process.
The Advanced Adapter Properties screen (see Advanced Adapter Properties Screen ) allows you to view and
modify infrequently accessed adapter settings. Advanced Adapter Properties Screen Field Descriptions describes the fields of the screen.
The Advanced Adapter Properties screen provides access to advanced Device Properties and PHY Properties. To modify the Link Error Settings Threshold Count and Threshold Time, press Enter while the cursor is on the desired field and type the new value.
****************************************************************************** * LSI Logic MPT Setup Utility v6.02.00.00 (2005.07.08) * * Advanced Adapter Properties -- SAS1064 * * * * IRQ 0B * * NVM Yes * * IO Port Address A800 * * Chip Revision ID 02 * * * * Spinup Delay (Secs) [ 2] * * CHS Mapping [SCSI Plug and Play Mapping] * * * * Link Error Threshold Threshold * * Settings Count Time(Secs) * * Invalid DWORDs 0 0 * * Loss of DWORD Sync 0 0 * * Running Disparity Errors 0 0 * * PHY Reset Errors 0 0 * * * * Advanced Device Properties * * PHY Properties * * Restore Defaults * * Esc = Exit Menu F1/Shift+1 = Help * * Enter = Select Item -/+ = Change Item * ******************************************************************************
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The Advanced Device Properties screen (Advanced Device Properties Screen) allows you to view and modify infrequently
accessed device settings. Advanced Device Properties Screen Field Descriptions describes the fields of the screen.
****************************************************************************** * LSI Logic MPT Setup Utility v6.02.00.00 (2005.07.08) * * Advanced Device Properties -- SAS1064 * * * * Maximum INT 13 devices for this adapter 24 * * Maximum Target device spinups 1 * * * * IO Timeout for Block Devices 10 * * IO Timeout for Block Devices(Removable) 10 * * IO Timeout for Sequential Devices 10 * * IO Timeout for Other devices 10 * * * * LUNs to Scan for Block Devices [All] * * LUNs to Scan for Block Devices(Removable) [All] * * LUNs to Scan for Sequential Devices [All] * * LUNs to Scan for Other Devices [All] * * * * Removable Media support [None] * * * * Restore Defaults * * * * * * Esc = Exit Menu F1/Shift+1 = Help * * Enter = Select Item -/+ = Change Item * ******************************************************************************
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The PHY Properties screen (PHY Properties Screen ) allows you to view and modify PHY-specific settings.
PHY Properties Screen Field Descriptions describes the fields of the screen.
Note - The Link Error Settings values on this screen only display the current values for this PHY and cannot be modified. To modify the Threshold values, return to the Advanced Adapter Properties screen.
****************************************************************************** * LSI Logic MPT Setup Utility v6.02.00.00 (2005.07.08) * * PHY Properties -- SAS1064 * * * * PHY 2 (3rd of 4 PHYs) * * SAS Port 2 * * Link Status Enabled, 3.0 Gbps * * Discovery Status 00000000 * * * * Device Identifier FUJITSU MAV2073RCSUN72G 0301 * * Scan Order 2 * * Device Information SAS * * SAS Address 500000E0:10D26642 * * * * Link Error Link Error Threshold Threshold * * Settings Count Count Time(Secs) * * Invalid DWORDs 0 0 0 * * Loss of DWORD Sync 0 0 0 * * Running Disparity Errors 0 0 0 * * PHY Reset Errors 0 0 0 * * Reset Link Error Counts * * * * Esc = Exit Menu F1/Shift+1 = Help * * Enter = Reset Phy error logs Alt+N = Next Phy Alt+P = Previous Phy * ******************************************************************************
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Integrated RAID configuration and management involves many screens, all of which are accessed
by selecting RAID Properties on the Adapter Properties screen (see Adapter Properties Screen ).
If no RAID volumes are currently configured, you are asked to create a RAID volume.
If at least one RAID volume is currently configured, you are shown the current volume(s) for management purposes.
The screens in the RAID configuration and management area are:
Select New Array Type
Create New Array
View Array
Manage Array
Select the type of array to create, as shown in Select New Array Type Screen.
The two new array type options are described in the text that appears on the screen.
****************************************************************************** * LSI Logic MPT Setup Utility v6.02.00.00 (2005.07.08) * * Select New Array Type -- SAS1064 * * * * * * Create IM Volume Create Integrated Mirror Array of 2 * * disks plus an optional hot spare. Data * * on the primary disk may be migrated. * * * * * * Create IS Volume Create Integrated Striping array of * * 2 to 8 disks. * * ALL DATA on array disks will be DELETED! * * * * Esc = Exit Menu F1/Shift+1 = Help * * Enter = Choose array type to create Esc = Return to Adapter Properties * *****************************************************************************
The Create New Array screen allows you to select disks for a new
array. Create New Array Screen shows this screen. Create New Array Screen Field Descriptions describes the fields of the screen.
For an IM volume, when the first disk is added you are asked about the data on the disks. You have two options:
Press M to keep the existing data and migrate to an IM array. Disk synchronization will occur.
Press D to overwrite existing data and create a new IM array. All data on all disks in the array will be deleted. No synchronization occurs.
After the volume is configured, press C to create the array. You are asked to save changes, which will create the array. After the array is created, the utility returns you to the Adapter Properties screen.
****************************************************************************** * LSI Logic MPT Setup Utility v6.02.00.00 (2005.07.08) * * Create New Array -- SAS1064 * * Array Type: IM * * Array Size(MB): 69618 * * * * Scan Device Identifier RAID Hot Drive Pred Size * * ID Disk Spr Status Fail (MB) * * 2 FUJITSU MAV2073RCSUN72G 0301 [Yes] [No] Primary --- 70007 * * 3 FUJITSU MAV2073RCSUN72G 0301 [Yes] [No] Secondary --- 70007 * * * * * * * * * * * * * * * * * * * * * * * * * * Esc = Exit Menu F1/Shift+1 = Help * * Space/+/- = Select disk for array or hot spare C = Create array * ******************************************************************************
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The View Array screen allows you to view the current array configuration, as
shown in View Array Screen . Press Alt+N to view the next array. Press C to
create a new array. View Array Screen Field Descriptions describes the fields of the screen.
****************************************************************************** * LSI Logic MPT Setup Utility v6.02.00.00 (2005.07.08) * * View Array -- SAS1064 * * Array 1 of 1 * * Identifier LSI LOGIC Logical Volume 3000 * * Type IM * * Scan Order 2 * * Size(MB) 69618 * * Status Optimal * * * * Manage Array * * * * Scan Device Identifier RAID Hot Drive Pred Size * * ID Disk Spr Status Fail (MB) * * 3 FUJITSU MAV2073RCSUN72G 0301 Yes No Secondary No 69618 * * 4 FUJITSU MAV2073RCSUN72G 0301 Yes No Primary No 69618 * * * * * * * * * * * * * * Esc = Exit Menu F1/Shift+1 = Help * * Enter=Select Item Alt+N=Next Array C=Create an array * ******************************************************************************
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The Manage Array screen is used to manage the current array, as shown
in Manage Array Screen . Manage Array Screen Field Descriptions describes the fields of the screen.
If you select Manage Hot Spare, the utility displays a hot spare management screen that has the same layout as the Create New Array screen.
If you select Synchronize Array, Activate Array, or Delete Array, you are prompted to confirm the choice by pressing Y for yes or N for no.
****************************************************************************** * LSI Logic MPT Setup Utility v6.02.00.00 (2005.07.08) * * Manage Array -- SAS1064 * * * * Identifier LSI Logic Logical Volume 3000 * * Type IM * * Scan Order 2 * * Size(MB) 69618 * * Status Optimal * * * * Manage Hot Spare * * * * Synchronize Array * * * * Activate Array * * * * Delete Array * * * * * * * * * * * * Esc = Exit Menu F1/Shift+1 = Help * * Enter = Select Item * ******************************************************************************
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It is important to exit the SAS BIOS Configuration Utility correctly, because some changes take effect only when you exit.
From the Adapter List, press the Esc key to exit.
In addition, a similar Exit screen appears when you exit most other screens,
and it can be used to save settings. Exit Screen shows the Exit
screen. Some options on the Exit screen might be grayed out, indicating that they
are not available at this time.
****************************************************************************** * LSI Logic MPT Setup Utility v6.02.00.00 (2005.07.08) * * * * * * * * * * * * * * * * * * Adapter and/or device property changes have been made. * * Cancel Exit * * Save changes then exit this menu * * Discard changes then exit this menu * * Exit the Configuration Utility and Reboot * * * * * * * * * * * * * * * * Esc = Exit Menu F1/Shift+1 = Help * * * ******************************************************************************
This section explains how to use the Configuration Utility to perform the following configuration tasks:
E.4 Performing RAID Configuration Tasks
Note - The RAID firmware needs at least 64 MB of unused disk space at the end of each drive to store metadata.
The LSISAS1064 controller supports the Integrated RAID hardware solution, which is a highly integrated, low-cost RAID solution. It is designed for systems requiring redundancy and high availability, but not requiring a full-featured RAID implementation.
Integrated RAID includes Integrated Mirroring (IM or RAID 1) and Integrated Striping (IS or RAID 0) technology. Integrated RAID is OS independent, easy to install and configure, and does not require a special driver. A RAID Volume is seen as a single drive by the host BIOS and OS.
The LSISAS1064 controller is based on the Fusion-MPT (Message Passing Technology) architecture. The Fusion-MPT architecture requires only a thin device driver that is independent of the I/O bus. LSI Logic provides the device drivers for various operating environments.
The ILOM SP monitors the GPIOs from the SAS1064 controller. If the controller indicates a failure, the service processor lights the fault LED on the corresponding disk drive and logs the error in the SP event log.
| Caution - Possible data loss: If you insert a HDD that has been configured with a RAID volume into a server that did not previously have its HDDs configured with RAID volumes, the existing HDD(s) in the server will be converted to RAID volumes during automatic synchronization and any existing data on the existing HDD(s) in the server will be erased. Before permanently removing a HDD that is part of an active RAID volume, use the LSI Configuration Utility to delete the RAID volume from the HDD to avoid causing this problem. |
The SCSI parameters, including RAID volumes configuration, are set up using the LSI BIOS configuration utility accessible by pressing the CTRL+C keys during the boot process. The LSI RAID firmware and BIOS is OS-independent and you set up RAID while in MPTBIOS POST before booting to an OS.
The parameters are saved in both the NVRAM and the disk drives. The RAID firmware needs 64 MB of unused disk space at the end of each drive to store the metadata.
The metadata stored on the disk drives contains sufficient information to restore and reactivate the RAID volumes in case the NVRAM is lost (for example, when the motherboard is replaced). However, if removed, the disk drives must first be labelled to make sure that they are placed back in the same disk bays from which they were removed when reinstalled. When the system is powered on, the RAID volumes are automatically activated and resynchronization is automatically performed.
One of the disk drives can be set up as a hot-spare disk if a RAID 1 (mirroring) volume is already set up. If one of the two disk drives used in the RAID 1 volume fails, the hot-spare drive automatically replaces it in the volume and resynchronization is immediately performed.
Note - Until the resynchronization is completed, the system is vulnerable to a failure of the now “primary” disk (the disk left from the original mirrored volume) because full data redundancy is not yet achieved. When the bad disk is replaced, the new disk automatically becomes the new hot-spare disk for the mirrored volume.
The following items describe the RAID level support for these servers:
RAID 1 (mirroring) is supported.
RAID 0 (striping) is supported.
LSI RAID 1E or IME (mirroring over more than two drives) is not supported at the initial release of these servers.
RAID 0+1 and 1+0 are not supported by the SAS1064 controller.
The following items describe the RAID volumes supported for these servers:
Up to two active RAID volumes are supported per system (RAID 0, RAID 1 or both).
A striped volume (RAID 0) can contain up to four disk drives.
A mirrored volume (RAID 1) can contain up to two disk drives.
One disk drive can be set up as hot spare for a RAID 1 array (one hot-spare disk per controller maximum).
Volumes are transparent to the OS and are seen as a single physical disk drive no matter how many drives they contain.
Possible RAID Combinations in a four-HDD server are:
Two drives RAID 0 + two drives non-RAID
Two drives RAID 1 + two drives non-RAID
Two drives RAID 0 + two drives RAID 1
Two drives RAID 0 + two drives RAID 0
Two drives RAID 1 + Two drives RAID 1
Three drives RAID 0 + one drive non-RAID
Four drives RAID 0
Two drives RAID 1 + one hot-spare drive + one drive non-RAID
Four drives non-RAID
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